War Machine was developed when the military had taken in the Mark II armor and it was upgraded with heavier external armor plating and new technology. The armor's heavy weapons arsenal of ballistic weaponry was provided by defense contractor Justin Hammer of Stark Industries' rival company Hammer Industries. The markings on the War Machine armor include its serial & production number of "AF47 001", the "ED 445 FLTS" tail code designation of the 445th Flight Test Squadron, and the modern and heritage United States Air Force logos. It is equipped with non-weapons grade repulsor based flight stabilizers that theoretically reach speeds of Mach 8 similar to the Mark IV's flight stabilizers.